Latent curing agent for thermosetting aminoplast resins, its manufacture and its use

US4273669A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Steffen Piesch · Oberursel, DE
• Peter Dorries · Frankfurt am Main, DE
• Ewald Schmidt · Ludwigsburg, DE
• Richard Hensel · Maintal, DE

Key dates

• Filing date: Mar 17, 1980
• Grant date: Jun 16, 1981
• Expiry date: Mar 17, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/41
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A latent curing agent for aminoplast resins produced by reacting diethanolamine with glycidol in a molar ratio of 1:(1 to 1.2) at 0.degree. to 90.degree. C. and then reacting the product with 0.5 to 1 mole of sulfur dioxide per mole of diethanolamine at 0.degree. to 90.degree. C.